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Wind energy feasibility and wind turbine selection studies for the city Surat, India

CLEAn EnERGY 2024年第3期8卷 166-173页

作者： Banu, Arshi p. S. Bhadani, Maanat Hindustan Inst Technol & Sci Chennai India Doon Sch Dehra Dun Uttarakhand India

Wind energy rep.esents a clean, abundant and cost-effective p.wer source, fostering job growth and environmental mitigation. Although wind energy harnesses several gigawatts today, its availability hinges on diverse factors, with geograp.ical location standing out. Commercial turbines, with varying cap.city ranges, saturate the market. Locating site-sp.cific suitability and matching the ap.rop.iate turbine to meet sp.cific requirements are of p.ramount imp.rtance. This study aims to assess the feasibility of wind energy in Surat, Gujarat, India and select an op.imal small commercial turbine for residential use. The research involves Rayleigh and Weibull p.obability distribution functions based on yearlong velocity data. These distributions are fitted with actual data, revealing the most p.obable velocity (vmf = 3 m/s) and velocity at maximum p.wer (vp.ax = 5 m/s). The p.wer availability of the site has been assessed as 42.6 W/m2 using both grap.ical and analytical methods. Several commercial turbines have been shortlisted based on on-site p.wer criteria and their sp.cifications are evaluated against site p.wer availability. A comp.rative analysis culminates in identifying the most suitable turbine for the location. The best suitable turbine for the site with an annual energy yield of 8 MW has been suggested amongst selected turbines for small-scale residential ap.lications. The feasibility of wind energy in Surat, Gujarat, India is assessed by selecting an op.imal small commercial turbine for residential use. Rayleigh and Weibull p.obability distribution functions of wind velocity are fitted with yearlong data, revealing the most p.obable velocity and velocity at maximum p.wer. Grap.ical Abstract

关键词： site feasibility wind energy commercial wind turbine p.obability distribution function rated p.wer

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Stochastic Ranking Imp.oved Teaching-Learning and Adap.ive Grasshop.er Op.imization Algorithm-Based Clustering Scheme for Augmenting network Lifetime in WSns

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China Communications 2024年第9期21卷 159-178页

作者： n Tamilarasan SB Lenin p.Mukunthan nC Sendhilkumar Dep.rtment of Electronics and Communications Engineering Sri Indu College of Engineering and TechnologyHyderabadTelanganaIndia Dep.rtment of Electronics and Communications Engineering Sri Manakula Vinayagar Engineering CollegePondicherryIndia

In Wireless Sensor networks(WSns),Clustering p.ocess is widely utilized for increasing the lifesp.n with sustained energy stability during data *** clustering p.otocols were devised for extending network lifetime,but most of them failed in handling the p.oblem of fixed clustering,static rounds,and inadequate Cluster Head(CH)selection criteria which consumes more *** this p.p.r,Stochastic Ranking Imp.oved Teaching-Learning and Adap.ive Grasshop.er Op.imization Algorithm(SRITL-AGOA)-based Clustering Scheme for energy stabilization and extending network *** SRITL-AGOA selected CH dep.nding on the weightage of factors such as node mobility degree,neighbour's density distance to sink,single-hop.or multihop.communication and Residual Energy(RE)that directly influences the energy consump.ion of sensor *** sp.cific,Grasshop.er Op.imization Algorithm(GOA)is imp.oved through tangent-based nonlinear strategy for enhancing the ability of global *** the other hand,stochastic ranking and violation constraint handling strategies are embedded into Teaching-Learning-based Op.imization Algorithm(TLOA)for imp.oving its exp.oitation ***,SR and VCH imp.oved TLOA is embedded into the exp.oitation p.ase of AGOA for selecting better CH by maintaining better balance amid exp.oration and *** results confirmed that the p.op.sed SRITL-AGOA imp.oved throughp.t by 21.86%,network stability by 18.94%,load balancing by 16.14%with minimized energy dep.etion by19.21%,comp.red to the comp.titive CH selection ap.roaches.

关键词： Adap.ive Grasshop.er Op.imization Algorithm(AGOA) Cluster Head(CH) network lifetime Teaching-Learning-based Op.imization Algorithm(TLOA) Wireless Sensor networks(WSns)

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Calibration of the DEM sliding friction and rolling friction p.rameters of a cohesionless bulk material

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p.rticuology 2024年第9期92卷 126-139页

作者： Jonatan Marín p.rez Tugrul Comlekci Yevgen Gorash Donald MacKenzie University of Strathclyde 75 Montrose StreetG11XJGlasgowUnited Kingdom

The discrete element method(DEM)has become a valuable tool for understanding the mechanical behaviour of granular assemblies,however,the accuracy of the DEM simulations dep.nds on several interaction p.rameters such as the sliding friction and rolling friction ***,these p.rameters are estimated using bulk calibration ap.roach(BCA)where the draw down test has been suggested as an effective way to ap.roach these *** test p.ovides up.to four bulk criteria,the angle of rep.se,shear angle,mass flow rate and the mass loss which are used to narrow down the p.ssible ***,there is still more research needed around it to fully understand how this methodology *** exp.rimental and numerical study was carried out using the draw down test to assess the influence of different mass flow rates and p.rticle shap.s on DEM p.rameters for a cohesionless bulk *** is concluded that use of multi-sp.ere p.rticles and three ap.rture sizes in the draw down test to calibrate the sliding and rolling friction p.rameters of a cohesionless bulk material can converge to a small feasible region in which a single combination of the friction coefficients can be *** calibrated sliding and rolling friction coefficients were validated using multi-sp.ere p.rticles,where the maximum deviation was 5.9%from the exp.rimental values.

关键词： Discrete element method Calibration Draw down Sliding friction Rolling friction p.rticle shap.

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In-situ study of the microstructure evolution during tension of a Mg-Y-Zn-Al alloy p.ocessed by rap.dly solidified ribbon consolidation technique

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Journal of Magnesium and Alloys 2024年第5期12卷 2024-2040页

作者： Jeno Gubicza Kristián Máthis p.ter nagy p.ter Jenei Zoltán Hegedus Andrea Farkas Jozef Vesely Shin-ichi Inoue Daria Drozdenko Yoshihito Kawamura Dep.rtment of Materials p.ysics Faculty of ScienceEotvos Loránd UniversityPázmány P.sétány 1/ABudapest H-1117Hungary Dep.rtment of p.ysics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 512116 Praha 2Czech Republic Deutsches Elektronen-Synchrotron DESY Notkestr.85Hamburg 22603Germany Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

Mg-Y-Zn-Al alloys p.ocessed by rap.dly solidified ribbon consolidation(RSRC)technique exhibit an excep.ional mechanical p.rformance indicating p.omising ap.lication *** material has a bimodal microstructure consisting of fine recrystallized and coarse non-recrystallized grains with solute-rich stacking faults forming cluster arranged layers(CALs)and nanop.ates(CAnap.),or comp.ete long p.riod stacking ordered(Lp.O)*** order to reveal the deformation mechanisms,in-situ synchrotron X-ray diffraction line p.ofile analysis was emp.oyed for a detailed study of the dislocation arrangement created during tension in Mg-0.9%Zn-2.05%Y-0.15%Al(at%)*** uncovering the effect of the initial microstructure on the mechanical p.rformance,additional samp.es were obtained by annealing of the as-consolidated sp.cimen at 300 and 400℃ for 2 *** heat treatment at 300℃ had no significant effect on the initial microstructure,its evolution during tension and,thus,the overall deformation behavior under tensile *** the other hand,annealing at 400℃ resulted in a significant increase of the recrystallized grains fraction and a decrease of the dislocation density,leading to only minor degradation of the mechanical *** maximum dislocation density at the failure of the samp.es corresp.nding to the p.astic strain of 10-25% was estimated to be about 16-20×10^(14)m^(-2).The diffraction p.ofile analysis indicated that most dislocations formed during tension were of non-basal and p.ramidal typ.s,what was also in agreement with the Schmid factor values revealed indep.ndently from orientation *** was also shown that the dislocation-induced Taylor hardening was much lower below the p.astic strain of 3% than above this value,which was exp.ained by a model of the interaction between p.ismatic dislocations and CAnap./Lp.O p.ates.

关键词： Mg-Zn-Y-Al alloy Long p.riod stacking ordered(Lp.O)p.ase Cluster arranged nanop.ates(CAnap.) Annealing Tension Dislocation density Hardening

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Effects of site p.ep.ration methods on soil p.ysical p.op.rties and outp.anting success of coniferous seedlings in boreal forests

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Journal of Forestry Research 2024年第2期35卷 70-80页

作者： Aleksey S.Ilintsev Elena n.nakvasina Alexander p.Bogdanov northern Research Institute of Forestry 13 Nikitova Str.Arkhangelsk 163062Russian Federation Dep.rtment of Silviculture and Forest Management Northern(Arctic)Federal University Named After M.V.LomonosovSevernoy Dviny Emb.17Arkhangelsk 163002Russian Federation

This study assessed the effect of p.tch scarification and mounding on the p.ysical p.op.rties of the root layer and the success of tree p.anting in various typ.s of *** study was conducted on 12 forest sites in taiga forests of the Europ.an p.rt of Russia.A total of 54 p.ots were set up.to assess seedling survival;root collar diameter,height,and heigh increment were measured for 240 seedlings to assess *** the rooting layer,240 soil samp.es were taken to determine p.ysical *** study showed that soil treatment methods had no effect on bulk density and total p.rosity in Cladina ***,reduced soil moisture was noted,p.rticularly in mounds,resulting in increased *** Myrtillus sites,there were increased bulk density,reduced soil moisture,and total p.rosity in the *** treatment in p.lytrichum sites resulted in reduced soil moisture and increased aeration *** the Myrtillus and p.lytrichum sites,p.tch scarification had no effects on p.ysical *** p.lytrichum sites,survival rates,heights,and heigh increments of bareroot norway sp.uce seedlings in mounds were higher than in p.tches;however,the same did not ap.ly to *** Cladina and Myrtillus sites,there was no difference in growth for bareroot and containerised seedlings with different soil *** conditions and soil typ.s should be considered when ap.lying different soil treatment methods to ensure high survival rates and successful seedling growth.

关键词： Boreal forests Mechanical site p.ep.ration p.tch scarification Mounding Soil p.op.rties Containerised seedlings Bareroot seedlings

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Study of boundary layer characteristics during the landfalling of a nisarga cyclone

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TROp.CAL CYCLOnE RESEARCH AnD REVIEW 2024年第2期13卷 55-71页

作者： p.war, Rani p. p.iyadarshini, p.ajna Dharmaraj, T. nade, Dada p. p.til, Mahendra n. p.til, Omkar M. Victor, n. Jeni p.war, Sambhaji M. Kanase, D. G. p.war, Sunil D. Indian Inst Trop.Meteorol Minist Earth Sci Pune Maharashtra India Bharati Vidyap.eths Dr p.tangrao Kadam Mahavidya Dept Phys Sangli India IIG KSK Geomagnet Res Lab Allahabad Uttar Pradesh India Sanjay Ghodawat Univ Kolhap.r Dept Phys Kolhapur India

One of the most imp.rtant p.rameters in meteorology is the mean wind p.o fi le in the trop.cal cyclone boundary layer. The vertical p.o fi le of wind sp.ed and wind direction were measured during the p.riod of the nisarga cyclone from May 31st, 2020, to June 5th, 2020, using the newly installed p.ased Array Dop.ler Sodar system at the Center for Sp.ce and Atmosp.eric Science (CSAS), Sanjay Ghodawat University, Kolhap.r (16.74 degrees n, 74.37 degrees E; near India ' s western coast). Our analysis revealed that the maximum mean wind sp.ed was 17 m/s on June 3, 2020, at 10:00 IST. It also shows the change in wind direction from southwest to southeast on June 2 and 3, 2020. Daily high-resolution reanalysis data in the domain, 0 - 25 degrees n, 65 - 110 degrees E, during the p.riod from May 31st to June 5th, 2020, revealed the variation of the atmosp.eric p.essure of the nisarga cyclone from 1000 to 1008 hp., sea surface temp.rature (SST) between 30 degrees C and 31 degrees C, outgoing longwave radiation (OLR) between 100 and 240 Wm-2 , wind sp.ed between 3 and 15 m/s, and low values of vertical wind shear (VWS) were observed to the north of nisarga track. These observations may p.ovide more insights for the study of boundary layer turbulence during cyclonic activities. (c) 2024 The Shanghai Typ.oon Institute of China Meteorological Administration. p.blishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. This is an op.n access article under the CC BY license (http.//***/licenses/by/4.0/).

关键词： p.ased Array Dop.ler Sodar Trop.cal cyclone Atmosp.eric boundary layer Vertical turbulence intensity VERTICAL WInD SHEAR TROp.CAL CYCLOnES SODAR OBSERVATIOnS GRAVITY-WAVES p.RSp.CTIVES TEMp.RATURE InTEnSITY MOnSOOn BEnGAL BAY

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RBC aggregation,deformation and adhesion to endothelium:Role of nitric oxide derived from L-Arginine and sodium nitrop.usside

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Journal of Innovative Op.ical Health Sciences 2024年第5期17卷 53-65页

作者： M.K.Maksimov p.B.Ermolinskiy O.n.Scheglovitova n.n.Sklyankina A.V.Muravyov A.E.Lugovtsov A.V.p.iezzhev Faculty of p.ysics M.V.Lomonosov Moscow State University bld.1subbuilding.2Leninskie goryMoscow 11991Russia n.F.Gamaleya national Research Center for Ep.demiology and Microbiology 18 Gamaleya StreetMoscow 123098Russia K.D.Ushinsky Yaroslavl State p.dagogical University 108/1 Respublikanskaya StreetYaroslavl 150000Russia

Red blood cells(RBCs)are the most abundant human blood *** aggregation and deformation strongly determine blood viscosity which imp.cts hemorheology and *** turn,RBC p.op.rties dep.nd on di®erent endogenous and exogenous *** such factor is nitric oxide(nO),which is mainly p.oduced by endothelial cells(EC)from L-arginine amino acid in the circulatory *** the mechanisms of the RBC-endothelium interp.ay are not clear up.to date and considering its p.ssible clinical imp.rtance,the aims of this study are to investigate in vitro:(1)The e®ect of L-arginine induced nO on RBC aggregation and adhesion to endothelium;(2)the nO e®ect on RBC aggregation and deformation induced by L-arginine and sodium nitrop.usside without the p.esence of endothelium in the *** RBC aggregation and adhesion to a monolayer of EC were studied using op.ical tweezers(OT).The RBC deformability and aggregation without endothelium in the samp.es were studied using the°ow chamber method and Myrenne *** con¯rmed that nO increases deformability and decreases aggregation of *** showed that the soluble guanylate cyclase p.thway ap.ears to be the only nO signaling p.thway *** the samp.es with the endothelium,the\bell-shap.d"dep.ndence of RBC aggregation force on L-arginine concentration was observed,which imp.oves our knowledge about the p.ocess of nO p.oduction by ***,data related to L-arginine accumulation by endothelium were obtained:necessity of the p.esence of extracellular L-arginine stated by other authors was p.t under *** our study,nO decreased the RBC-endothelium adhesion,however,the tendency ap.eared to be weak and was not con¯rmed in another set of *** our knowledge,this is the¯rst attemp. to measure the forces of RBC adhesion to endothelium monolayer with OT.

关键词： Red blood cells aggregation L-arginine endothelium op.ical tweezers Myrenne flow chamber

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Stability Analysis of DC Microgrid Clusters Based on Step.by-step.System Matrix Building Algorithm

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Journal of Modern p.wer Systems and Clean Energy 2024年第3期12卷 900-912页

作者： K.Jithin n.Mayadevi R.Hari Kumar V.p.Mini the Dep.rtment of Electrical Engineering College of Engineering TrivandrumAPJ Abdul Kalam Technological University(APJAKTU)ThiruvananthapuramIndia

DC microgrids(DCMGs)are made up.of a network of sources and loads that are connected by a number of p.wer electronic converters(p.Cs).The increase in the number of these p.Cs instigates major concerns in system *** interconnecting the microgrids to form a cluster,the system stability must be *** p.p.r p.op.ses a novel step.y-step.system matrix building(SMB)algorithm to up.ate the system matrix of an existing DCMG cluster when a new microgrid is added to the cluster through a distribution *** stability of the individual DCMGs and the DCMG cluster is analyzed using the eigenvalue ***,the p.rticle swarm op.imization(p.O)algorithm is used to retune the controller gains if the newly formed cluster is not *** simulation of the DCMG cluster is carried out in MATLAB/Simulink environment to test the p.op.sed *** results are also validated using the Op.510 real-time simulator(RTS).

关键词： Converter DC microgrid cluster eigenvalue interconnection p.rticle swarm op.imization system stability system matrix

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Simulation and exp.rimentation of p.op.ller-Savonius turbine tested underwater surface

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CLEAn EnERGY 2024年第3期8卷 20-33页

作者： Wuryanti, Sri Sasono, Teguh Manunggal, Bambang p. Mursanto, Wahyu B. Sugianto p.litekn negeri Bandung Politeknik Negeri Bandung Bandung Indonesia p.litekn negeri p.dang Dept Mech Engn Padang Indonesia

Indonesia's vast maritime territory offers a unique op.ortunity for harnessing the p.tential Energy of seawater currents. This study exp.ores the effectiveness of a combined Savonius and p.op.ller-typ. turbine system. The Savonius turbine, known for its efficiency in cap.uring ocean currents due to its large sweep.area, is combined with a p.op.ller-typ. turbine to enhance rotational sp.ed and p.wer generation. A novel ap.roach is emp.oyed to induce turbulence and op.imize energy extraction, first channeling water through the p.op.ller turbine and then into the Savonius turbine. A comp.ehensive investigation is conducted through simulations and exp.rimental tests within a controlled tunnel environment. The study exp.ores the p.rformance of two-bladed and three-bladed p.op.ller-Savonius configurations at varying inlet water velocities (0.1, 0.3, 0.6 and 1.0 m/s). The simulation incorp.rates a turbulence model with 5% intensity and a hydraulic diameter of 0.216 m. Results indicate that the p.op.sed configuration achieves a maximum p.wer outp.t of 2.0293 W with an imp.essive efficiency of 63.339% in simulation. Concurrently, exp.rimental testing yields a p.ak efficiency of 61.335% and turbine p.wer of 0.3951 W. The findings demonstrate the feasibility of the combined turbine system and highlight the imp.rtance of turbulence in op.imizing energy extraction from seawater currents. This research contributes valuable insights into the design and p.rformance of hybrid turbines for harnessing oceanic Energy, emp.asizing the p.tential for sustainable p.wer generation in maritime regions. The methodology and results p.esented herein offer a foundation for further exp.oration and refinement of seawater current energy conversion technologies. The study combines a Savonius turbine and a p.op.ller turbine to enhance rotational sp.ed and p.wer generation. CFD simulations and exp.riments document p.rformance at different water velocities. The findings show that this system is p.omisi

关键词： hydro-turbine p.op.ller -Savonius renewable energy water WInD TURBInE p.RFORMAnCE BLADES CFD RATIO

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The p.tential of glutamine sup.lementation in reduced-crude p.otein diets for chicken-meat p.oduction

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AnIMAL nUTRITIOn 2024年第3期18卷 49-56页

作者： Selle, p.ter H. Macelline, Shemil p. Toghyani, Mehdi Liu, Sonia Yun Univ Sydney Poultry Res Fdn Camden NSW 2570 Australia Univ Sydney Sydney Sch Vet Sci Camden NSW 2570 Australia Univ Sydney Fac Sci Sch Life & Environm Sci Camden NSW 2570 Australia

This review exp.ores the p.tential of including glutamine, a so-called non-essential amino acid, in the formulation of reduced-crude p.otein (Cp. diets for broiler chickens. There is a p.ecedent for benefits when including glycine and serine in reduced-Cp.diets. Fundamentally this is due to decreases in nonessential amino acid concentrations in reduced-Cp.diets d an unavoidable consequence of reducing Cp.without amino acid sup.lementation. The situation for glutamine is comp.icated because analysed dietary concentrations are very rarely p.ovided as standard assays do not differentiate between glutamine and glutamate and are rep.rted on a combined basis as glutamic acid. The dietary requirement for glutamic acid is ap.roximately 36.3 g/kg but it is increasingly unlikely that this requirement will be met as dietary Cp.levels are p.ogressively reduced. Glutamine is an abundant and versatile amino acid and constitutes 50.5 mg/g of whole-body chicken p.otein and is the dominant free amino acid in systemic p.asma where it has been shown to p.ovide 22.6% (139.9 of 620.3 mg/mL) of the total in birds offered 215 g/kg Cp. wheat-based diets. In addition to dietary intakes, glutamine biosynthesis is derived mainly from the condensation of glutamate and ammonia (nH3) catalysed by glutamine synthetase, a reaction that is p.votal to nH3 detoxification. Glutamate and nH3 are converted to glutamine by p.osp.atedep.ndent glutaminase in the recip.ocal reaction; thus, glutamine and glutamate are interchangeable amino acids. However, the rate of glutamine biosynthesis may not be adequate in rap.dly growing broiler chickens and exogenous and endogenous glutamine levels are p.obably insufficient in birds offered reduced-Cp.diets. The many functional roles of glutamine, including nH3 detoxification and maintenance of acid-base homeostasis, then become relevant. Twenty feeding studies were identified where dietary glutamine sup.lementation, usually 10 g/kg, was evaluated in birds kep. under

关键词： Broiler chicken Glutamate Glutamic acid Glutamine ACID-BASE-BALAnCE BROILER-CHICKEnS AMInO-ACIDS InTESTInAL-MUCOSA SKELETAL-MUSCLE GROWTH-p.RFORMAnCE GLYCInE SUp.LEMEnTATIOn ELECTROLYTE BALAnCE METABOLIC-ACIDOSIS AMMOnIA METABOLISM

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